THE ROLE OF PROSTAGLANDINS, NITRIC OXIDE AND OXYGEN IN THE DUCTUS ARTERIOSI OF THE PRE-TERM CHICKEN EMBRYO (Gallus domesticus)

Effects of the NO donors Sodium Nitroprusside and S-nitrosoglutathione on oxygen consumption and embryonic organ growth in the domestic broiler chicken, Gallus gallus domesticus

Mechanisms mediating the oxygen-induced vasoreactivity of the ductus arteriosus in the chicken embryo.

The avian embryo provides a novel model for studying the ductus arteriosus (DA) during the transition from in ovo to ex ovo life. Here we examined the mechanisms regulating the vasoreactivity of the two morphologically distinct portions of the chicken DA (proximal and distal) in response to O(2). Oxygen-induced contraction is redox sensitive and reversed by the reducing agent dithiothreitol and...

Ontogeny of chicken ductus arteriosus response to oxygen and vasoconstrictors.

The present study aimed to characterize the contractile reactivity of the chicken ductus arteriosus (DA) from the last stage of prenatal development and throughout the perinatal period. Isolated DA rings from 15-day, noninternally-pipped 19-day, and externally-pipped 21-day embryos were studied using myograph techniques. On embryonic day 15, the chicken DA did not respond to O(2) (0 to 21%), no...

Responses of the post-term arterial duct to oxygen, prostaglandin E2, and the nitric oxide donor, 3-morpholinosydnonimine, in lambs and their clinical implications.

BACKGROUND Nitric oxide is a potent dilator of the pulmonary vasculature. There have been no previous reports on the action of nitric oxide on the arterial duct. OBJECTIVES To determine the responses of isolated post-term arterial duct rings from lambs to oxygen, prostaglandin E2 (PGE2) and the nitric oxide donor, 3-morpholinosydnonimine (SIN-1). SETTING Experimental laboratory. SUBJECTS ...

Effects of Copper Heavy Metal and Interaction With Nitric Oxide on Growth Parameters, Photosynthetic Pigment, Soluble Carbohydrate Content and Antioxidant Enzymes in Portulaca oleracea L. Ferdous Fendereski, Mahlagha Ghorbanli* and Arian Sateei

Copper is one of the heavy metal in plant that causes toxicity at high concentration via producing reactive oxygen species. Nitric oxide can protect cells from oxidative stress produce by reactive oxygen species. Effect of different concentrations of copper (1000, 1500 and 2000 μM) and interaction with nitric oxide (100 and 150 μM) were studied on growth parameters (shoot and root length) and s...